BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Powder Coating Front of K engine Empty Powder Coating Front of K engine Wed Jul 31, 2013 4:07 pm

jjefferies

jjefferies
Gold member
Gold member
I'm in the middle of a project to restore a K75C and have pulled the engine and am considering powder coating the several engine covers. In the past I have powder coated the Valve and Crankcase covers and had reasonable results. But now I'm looking at the timing belt, Hall's effect and oil/water pump covers and wondering if it makes sense to do them. The considerations seem to be that these parts take the most beating in terms of sand, rock and road debris. Powder coating while enhancing protection still is subject to damage. Does it make more sense to leave these parts as painted and be able to simply hit them occasionally with spray paint? If they are powder coated and are damaged that might mean more difficulty in dealing with  cosmetics. Yeah, I suspect it's my feminine side.

thanks
J.

    

2Back to top Go down   Powder Coating Front of K engine Empty Powder Coating Front of K engine Wed Jul 31, 2013 8:08 pm

RT

RT
Life time member
Life time member
Hi mate
my tuppence worth is just paint it with heat resistant paint every now and again, wash it down every now and again and spare that expense. If your side covers look good anyway no body will notice a few chips on the front. I painted mine 2 years ago and is just now ready for another coat after about 25,000 Kilometers.
Good luck
RT


__________________________________________________
2011 R1200RT
    

3Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Wed Jul 31, 2013 8:19 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
The thing about powdercoating is that it will work fine but when it gets damaged [as it will from chips etc] moisture and corrosive salts get through and get trapped underneath the coating where they can do damage. Its like paint on wood or varnish on a yacht, unrepaired damage will make it worse. However it does look really good.

If however you are meticulous and can guarantee every damage will be repaired immediately then do it. But for most of us paint application every few years is probably better.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

4Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Wed Jul 31, 2013 9:43 pm

RicK G

RicK G
admin
admin
I will not powder coat ant part of an engine and would recommend the same for you.
Powder coating is a plastic and does not conduct heat in any real sense. Much of the cooling of even a water cooled engine comes from the airflow over the engine, if the covers have the plastic coating the heat cant escape well to the airflow.
I have seen several air cooled engines cooked and very well cooked because of powder coating the engine covers.
You may not cook a water cooled K engine but you will give the cooling system a workout that it doesnt need and reduce the cooling capacity of the system.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

5Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Thu Aug 01, 2013 2:11 am

MikeP

MikeP
Life time member
Life time member
Paint.

I prefer paint, always and for the reasons stated.

Powder Coating Front of K engine DSCF2741-L

    

6Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Thu Aug 01, 2013 3:27 am

JR_K100RS

JR_K100RS
Life time member
Life time member
Bloody heck Mike , do you assemble silicon chips in your workshop ? Laughing 

JR

Melbourne Australia


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

7Back to top Go down   Powder Coating Front of K engine Empty Powder Coating Front of K engine Thu Aug 01, 2013 4:27 am

RT

RT
Life time member
Life time member
Yes, er that's what mine looked like too, but the um camera wasn't working.


__________________________________________________
2011 R1200RT
    

8Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Thu Aug 01, 2013 5:05 am

92KK 84WW Olaf

avatar
Life time member
Life time member
Rick G is also entirely correct re the airflow. When we did science and physics we even learnt paint colour makes a difference. The difference is slight compared to wrapping it up in powdercoating.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

9Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Thu Aug 01, 2013 5:07 am

92KK 84WW Olaf

avatar
Life time member
Life time member
My castings are a bit off colour and am going to test cleaning them with Milton. It works for cleaning tea cups and tea spoons [a tea drinker would know how tea stains ware].


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

10Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Thu Aug 01, 2013 6:57 am

charlie99

charlie99
VIP
VIP
Powder Coating Front of K engine 2013-021

nothing wrong with a little polishing

pits and lumps present more surface area for the cooling ..so don't go overboard

paint kinda smooths this off a bit ...and powder coating adds another layer that restricts heat transfer as said earlier


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OPowder Coating Front of K engine Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

11Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Sun Aug 04, 2013 1:18 am

Jim Miller

Jim Miller
active member
active member
Seems like a spray bomb is a hellavalot easier and cheaper...I did mine a couple months ago on the K75s and it looks like crap already..bugs and chips..

Should just paint it bug colour.


__________________________________________________
1987 K75s  and 1979 Moto Guzzi 1000sp
    

12Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Sun Aug 04, 2013 2:55 am

RicK G

RicK G
admin
admin
Once there is a nice coating of bugs put a coat of clear over it:D


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

13Back to top Go down   Powder Coating Front of K engine Empty Re: Powder Coating Front of K engine Sun Aug 04, 2013 3:07 am

Jim Miller

Jim Miller
active member
active member
lol!   Good one....
@RicK G wrote:Once there is a nice coating of bugs put a coat of clear over it:D


__________________________________________________
1987 K75s  and 1979 Moto Guzzi 1000sp
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum